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How to build Qt for Visual Studio 2010
...ction:
http://download.qt.io/archive/qt/4.8/4.8.6/qt-opensource-windows-x86-vs2010-4.8.6.exe
http://download.qt.io/archive/qt/4.8/4.8.6/qt-opensource-windows-x86-vs2008-4.8.6.exe
You should not download Qt by clicking "Qt libraries 4.8.6 for Windows (Visual Studio 2008, 218 MB)", but by clicking...
List comprehension rebinds names even after scope of comprehension. Is this right?
...6, 77: 77, 78: 78, 79: 79, 80: 80, 81: 81, 82: 82, 83: 83, 84: 84, 85: 85, 86: 86, 87: 87, 88: 88, 89: 89, 90: 90, 91: 91, 92: 92, 93: 93, 94: 94, 95: 95, 96: 96, 97: 97, 98: 98, 99: 99}
>>> x
9
However it has been fixed in 3 as noted above.
...
Importing CommonCrypto in a Swift framework
...ainst the umbrella framework 'System.framework' instead. for architecture x86_64
– stannie
Mar 27 '15 at 15:14
...
Is it possible to make relative link to image in a markdown file in a gist?
...to stick with the long, static URL:
https://gist.github.com/mattborn/c346c8689a5eaf86e823
However, relative URLs to some files work:
http://bl.ocks.org/mattborn/c346c8689a5eaf86e823
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impro...
What is the difference between char s[] and char *s?
...to modify the contents of the array, the behavior is undefined.
GCC 4.8 x86-64 ELF implementation
Program:
#include <stdio.h>
int main(void) {
char *s = "abc";
printf("%s\n", s);
return 0;
}
Compile and decompile:
gcc -ggdb -std=c99 -c main.c
objdump -Sr main.o
Output con...
A fast method to round a double to a 32-bit int explained
...
This kind of "trick" comes from older x86 processors, using the 8087 intructions/interface for floating point. On these machines, there's an instruction for converting floating point to integer "fist", but it uses the current fp rounding mode. Unfortunately, the...
C# 'is' operator performance
...interesting to see that x64 created faster but executed as/is slower than x86
x64 Release Mode:
Stopwatch:
As: 561ms
Is: 597ms
Base property: 539ms
Base field: 555ms
Base RO field: 552ms
Virtual GetEnumType() test: 556ms
Virtual IsB() test: 588ms
Create Time : 10416ms
UtcNow:
As: 499ms...
.a: error adding symbols: File format not recognized 原因 - 操作系统(...
...也可能出现编译能通过，但ldd报链接失败不能运行。原因是：在低版本Linux GCC上编译工程 Linux编译链接时报错：xxx.a: error adding symbols: File format not recognized。也可能出现编译能通过，但ldd报链接失败不能运行。
原因是：在低版...
解决：apache2.service: Failed to run \'start\' task: No such file or d...
...ice: Failed to run & 39;start& 39; task: No such file or directory。原因是：& 39; var tmp& 39;目录被删掉了导致的。mkdir var tmp 搞定。今天 systemctl reload apache2.service 重启apache2时，出现一个错误：apache2.service: Failed to run 'start' task: No such file or direct...
Homebrew作者解不出面试题，被Google拒绝 - 创意 - 清泛网 - 专注C/C++及内核技术
Homebrew作者解不出面试题，被Google拒绝Homebrew是Mac上一套流行的软件包管理工具，可以通过命令行搜索、安装、卸载软件包。近日，其作者在进入Google的面试中，因解不出一个二叉 Homebrew是Mac上一套流行的软件包管理工具，可以...